No announcement yet from Adobe, AFAIK – but here's CNET's take:
"You can edit ProRaw images in the iPhone Photos app. The photos will have a raw tag on them in the same way HDR videos do. Since the file is DNG, apps like Adobe Lightroom will work, but will work better once they support ProRaw."
" – ProRAW format support: You’ll be able to import and edit images taken in the Apple ProRAW format in the December updates to Camera Raw, Lightroom Classic, or Lightroom (desktop, iOS, Android, lightroom.adobe.com). ProRAW is built using the Adobe DNG file format and specification. Please click here for more information."